Comments :The RMI Harmonic synthesizer offers very unique and characteristic sounds thanks to a special sound generation : additive synthesis.
Harmonic Synthesizer looks like a combo-organ, two sets of 16 harmonics sliders show that this synth is particular.
one of the two harmonic generator
Each harmonic generators is monophonic, however they are routed on an independant audio ouput. This allows to make strange stereo effect.

The left part of the keyboard have several parts.

1. Two Waveforms generators :

Waveform Generator n°1

Waveform Generator n°2

We have here several preset waveforms available such as "Clarinet", "Pulse", "Sync", "Flute", "Horn", "Reed". They can be selected or mixed with
the harmonic generator.

As said before each generator has independant audio chanel. First generator can play a "sequence" while a solo line is played with the second generator (listen to the sound demo "Boogie Bass" where two sequences are played at once).

2. Sequencer :

Harmonic doesn't have a real sequencer, it is an arpegiator. When you press a chord, a sequence is created.
Placing the Harmonic Synthesizer in the Random Mode causes the notes to be played in random order.
Exotic rhythms can be created with noise effect.

3. Modulation :

Each generator has his own modulation and portamento.
Finally, a unique LFO is available.

4. Dynamic filter :

Dynamic effects are created by voltage-controlled filters
with low-pass, band-pass, and high-pass mixable outputs. [The envelope generator for the VCF
is very strange on the Harmonic Synthesizer. It has a knob to select "Sweep Up", Sweep Down"
and another knob for time.]